Fix prefs registration for BrowserInstantController.

chrome/browser/resources/options/browser_options.js

Index: chrome/browser/resources/options/browser_options.js
diff --git a/chrome/browser/resources/options/browser_options.js b/chrome/browser/resources/options/browser_options.js
index 548a6068d4007f25427caf70b04c26575dafbc3d..1d0d929668962bc2d7fb59ac8d9be3399ec9920c 100644
--- a/chrome/browser/resources/options/browser_options.js
+++ b/chrome/browser/resources/options/browser_options.js
@@ -167,6 +167,13 @@ cr.define('options', function() {
         $('instant-enabled-control').setAttribute(
             'metric', 'Options_InstantExtendedEnabled');
       }
+      // We need to set the starting value for the instant checkbox as
+      // it may be different from the value of the preference.

[Mattias Nissler (ping if slow), 2013/02/25 18:53:41]

If the instant_enabled is set to the right pref name, the UI should do the right
thing already if I'm not mistaken. See
https://code.google.com/p/chromium/codesearch#chromium/src/chrome/browser/res...

+      if (loadTimeData.getValue('instant_starting_value')) {
+        $('instant-enabled-control').setAttribute('checked', 'true');
+      } else {
+        $('instant-enabled-control').setAttribute('checked', 'false');
+      }
 
       // Users section.
       if (loadTimeData.valueExists('profilesInfo')) {